People are focusing on CDN being the only cause of ban possibilties, but there can be numerous other ways that they can detect unauthorized system usage. It's like being in the middle of a forest and knowing that a ninja can attack you from any side. I honestly think being 100% safe is not really a possibility, Nintendo has much better security now. And they really love the Switch's success, they aren't gonna be dumb like before with the 3DS and Wiiu.
Personally I'm gonna get a switch and hack, even if it gets banned. In fact I may even intentionally buy a banned switch tablet and do whatever I want with it. I get to spend less money that way on a switch for hacks. At this point its a decision between hacks, or staying legit + online play. You can't expect to enjoy both. I'm choosing to go with hacks because the benefit is far greater than online play to me.